All posts tagged ‘Euler’s Constant’

Yes, we know all the nerds love to celebrate March 14th as ∏ Day (3/14 or 3.14). But that’s so passe! If you’re a real numbers geek, you’ll be celebrating tomorrow, 2/7 or 2.7, which is e Day, named after Euler’s Constant.

The real number (if you can call it that) is 2.71828182845904523536028747135266249775724709369995… It goes on. Forever. It can also be represented thusly:

Equation for Euler’s Constant from Wikipedia.

In day-to-day life, we run into it most usually due to its part in the calculation of compound interest; it helps you figure out the results when you take interest over different periodic intervals. Good old Bernoulli also related it to probability theory. And any of us who had to take calculus and differential equations in college probably still have nightmares about it.

But one great way to fight those demons is to embrace them, and to celebrate the day that represents the number. So tomorrow, greet everyone you meet with a “Happy e Day!” and then go make your mortgage payment.